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Lorestan pins as an object with diverse kinds, diverse construction methods and diverse functions, though investigated in the studies of researchers as a part of Lorestan’s bronze objects and, in some cases, in general studies, have not yet been focused on well enough, and no technical studies as such have ever been done on them. Among the manmade objects of the inhabitant tribes in this region are metal objects. One of the metal objects discoveredis metal pin in which different metals such as iron, silver and bronze and,so far in some cases, a combination of these have been used. They date back to the first and second millennium BC. This study tries to investigate, describe, explain, compare and introduce these pins focusing on their manufacturing techniques, designs, type, function and history.

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Alashtar is one of the prominent valley plains in central Zagros Mountain Range. The main focus of this study is based on the activities performed in this plain in 2006-2007 periods with the aim of identifying and studying the ancient relics as well as the studies conducted in 2010  to identify and analyze Parthian settlement patterns in this area. Archaeological survey in the area identified 72 historical sites and ancient monument. The current studies suggest that first settlements in this area date back to Copper and Stone Age and the most recent settled sites belong to the later centuries of the Islamic period. Among the historical relics found in Alashtar plain, 42 relics contained remnants of the Parthian.  The overall perception of the settlement pattern in this plain during Parthian period reflects variation in population or distribution of settlement patterns compared to the former and later periods. The distribution pattern of the identified historical sites suggests that the settlements were mainly in the form of rural units with no evidence of urban centers. Overall, the distribution pattern of Parthian settlements has been strongly influenced by climatic characteristics, environmental capabilities and the special geographical position of the region. This paper attempts to study the Parthian settlement pattern in this plain; moreover, it seeks to examine these historical sites and interpret the settlement patterns in the Parthian period.